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Written By Veda Maddala , M Pharmacy
Reviewed By Dr Aneela Siddabathuni , MPharma., PhD
Last Updated Jan 1, 2025 | 2:49 PM IST
Onus Oral Suspension is used in the prevention of vomiting and nausea that usually occur after cancer chemotherapy, radiation treatment or surgery. It contains Ondanestron, which works by blocking the action of a chemical in the body (serotonin) responsible for causing nausea and vomiting. It may cause side effects such as feeling of warmth, constipation, headache, diarrhoea, headache, drowsiness, feeling of tiredness. Before taking this medicine, you should tell your doctor if you are allergic to any of its components or if you are pregnant/breastfeeding, and about all the medications you are taking and pre-existing medical conditions.
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Prescription drug

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Composition :

ONDANSETRON-2MG/5ML

Consume Type :

ORAL

Return Policy :

Not Returnable

About Onus Oral Suspension

Onus Oral Suspension belongs to a group of medications called ' anti-emetics' primarily used in the prevention of vomiting (being sick) and nausea (feeling sick) that usually occur after cancer chemotherapy, radiation treatment or surgery. Nausea is an uneasy feeling in which a person feels an urge to vomit while vomiting is the natural response to the body to forcefully discharge the stomach contents.

Onus Oral Suspension contains 'Ondanestron' that works by blocking the action of a chemical in the body (serotonin) responsible for causing nausea and vomiting. As a result, Onus Oral Suspension prevents the sensation of nausea and vomiting caused due to conditions like surgery, cancer chemotherapy, pregnancy or motion sickness.

Take Onus Oral Suspension as prescribed. Your doctor will advise you on how often you take Onus Oral Suspension based on your medical condition. A person taking Onus Oral Suspension often experience side effects that include a feeling of warmth, constipation, headache, diarrhoea, headache, drowsiness, feeling of tiredness. Although, not every person faces the side effects of Onus Oral Suspension, and even some of the unpleasant effects of Onus Oral Suspension do not require medical attention.

The use of Onus Oral Suspension is restricted in persons who are allergic to any of the ingredients present in this medicine. Tell your doctor if you are facing liver, kidney, or heart disorders. Onus Oral Suspension should be used during pregnancy or breastfeeding after consulting a doctor. Onus Oral Suspension contains lactose so tell your doctor if you have an intolerance to some sugars.

Uses of Onus Oral Suspension

Treatment of Nausea, Vomiting.

Medicinal Benefits

Onus Oral Suspension belongs to a group of medications called anti-emetics used to prevent nausea and vomiting associated with conditions like cancer chemotherapy, radiotherapy, surgery, pregnancy and motion sickness in adults and children above 4 years of age. When serotonin level increases in the blood, it stimulates the CTZ receptor (chemoreceptor trigger zone) located in the brain responsible for controlling nausea and vomiting. Onus Oral Suspension acts by inhibiting the release of this serotonin, thereby preventing nausea and vomiting. 

Side Effects of Onus Oral Suspension

  • Sensations of flushing
  • Constipation
  • Headache
  • Confusion
  • Dizziness
  • Fast heartbeat
  • Fever
  • Headache
  • Shortness of breath
  • Weakness

Directions for Use

Tablet: It can be taken with or without a meal as advised by the doctor. Swallow the tablet as a whole with a glass of water. Do not break, crush or chew it. Oral disintegrating tablet/Mouth dissolving tablet (tablet MD): Check the label for directions before use. Do not handle the tablet with wet hands. Place the tablet in the mouth and allow it to dissolve. Do not swallow it as a whole.

Storage

Store in a cool and dry place away from sunlight

Drug Warnings

Tell your doctor if you are dealing with an uneven heart, liver problems, or any other problem. Tell your doctor if you are taking medicine for epilepsy, cancer medicines, and abnormal heartbeats. Onus Oral Suspension may affect a person's ability to drive. Therefore, should avoid driving or operating any machine. People with an irregular heartbeat (arrhythmia), and phenylketonuria (too much of protein phenylalanine in the blood) should not take Onus Oral Suspension as it may cause serious conditions. The liver patient should not take more than 8 mg of Onus Oral Suspension daily. Onus Oral Suspension should be used during pregnancy or breastfeeding after consultation with a doctor. Taking Onus Oral Suspension with apomorphine can cause a sharp dip in blood pressure, even leading to death, so avoid its intake together.

Therapeutic Class

ANTIEMETICS

Diet & Lifestyle Advise

  • A person should take a healthy diet that includes lots of fruits and vegetables, lean meats, skinless poultry, nuts, fish, whole grains, plant-based oils, and low-fat dairy products will help to keep a person in good health and avoid chances of nausea and vomiting. 

  • One should avoid taking greasy or oily foods as this food triggers nausea and vomit.

  • Eat cool foods instead of hot and spicy foods.

  • Include clear broths, non-fat yoghurt, fruit juice, sherbet, and sports drinks for fluid make up which has got lost due to vomiting. 

 

Habit Forming

No

How Onus Oral Suspension Works

Onus Oral Suspension contains 'Ondanestron' that works by blocking the action of a chemical in the body (serotonin) responsible for causing nausea and vomiting. As a result, Onus Oral Suspension prevents the sensation of nausea and vomiting caused due to conditions like surgery, cancer chemotherapy, pregnancy or motion sickness.

What if I have taken an overdose of Onus Oral Suspension

Do not take more than the prescribed dose of Onus Oral Suspension as it may cause overdose. The symptoms of overdose include sudden loss of vision for a short time, irregular heartbeat, constipation, fainting, dizziness or lightheadedness. If you suspect you have taken overdose or notice signs of overdose, please consult a doctor immediately.
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Alcohol

Unsafe

One should avoid consuming alcohol while taking Onus Oral Suspension as this medicine can interact with alcohol and may worsen the side effects.

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Pregnancy

Safe if prescribed

Onus Oral Suspension could be used during pregnancy after consulting a doctor.

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Breast Feeding

Safe if prescribed

Onus Oral Suspension could be used during breastfeeding after consulting a doctor.

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Driving

Caution

Onus Oral Suspension may cause lightheadedness in the body, so a person taking Onus Oral Suspension should avoid driving or operating any heavy machinery or tasks that require mental alertness.

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Liver

Safe if prescribed

In persons dealing with liver problems, the use of Onus Oral Suspension is allowed if prescribed by the doctor. However, in patients with severe liver problems should take a low dose of Onus Oral Suspension as much as possible. Do not take more than 8 mg of Onus Oral Suspension per day in case of liver disease.

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Kidney

Safe if prescribed

The use of Onus Oral Suspension is safe in patients dealing with kidney disorders. No dose adjustment is required.

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Children

Safe if prescribed

Onus Oral Suspension should not be given to the children below 4 years of age. The use of Onus Oral Suspension is safe in children above 4 years of age if prescribed by the doctor.

Country of origin

India
Other Info - ON42714

Author Details

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FAQs

Onus Oral Suspension is indicated in the treatment of nausea and vomiting.
Onus Oral Suspension works by blocking the action of a chemical in the body (serotonin) responsible for causing nausea and vomiting.
Onus Oral Suspension may cause changes in the vision, so one should avoid driving or operating any machine that required mental alertness.
People with an irregular heartbeat (arrhythmia), and phenylketonuria (too much of protein phenylalanine in the blood) should not take Onus Oral Suspension as it may cause serious conditions. The liver patient should not take more than 8 mg of Onus Oral Suspension daily. Taking Onus Oral Suspension with apomorphine can cause a sharp dip in blood pressure, even leading to death, so avoid its intake together.
Onus Oral Suspension is an anti-sickness medicine that takes about 1-2 hours to show its action.
Onus Oral Suspension contains Ondansetron, an antiemetic drug.
Onus Oral Suspension is ineffective in preventing nausea associated with motion sickness.
Before taking the Onus Oral Suspension, let your doctor know about all your medical conditions, sensitivities, and medications you are using. Also, inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding.
Yes, Onus Oral Suspension might make you feel sleepy or tired.
Onus Oral Suspension usually works quickly, usually within 30 minutes, but it can take up to two hours for the full effect.
Common side effects of Onus Oral Suspension may include warmth, constipation, headache, diarrhoea, drowsiness, and tiredness. However, not every person faces these side effects, and even some of the unpleasant effects of Onus Oral Suspension do not require medical attention.
Onus Oral Suspension was not found to be beneficial in the treatment of seasickness.
Onus Oral Suspension works by blocking the action of a chemical in the body (serotonin) that is responsible for causing nausea and vomiting. As a result, Onus Oral Suspension prevents the sensation of nausea and vomiting caused by conditions like surgery, cancer chemotherapy, pregnancy or motion sickness.
Yes, you can take Onus Oral Suspension half an hour to 1 hour before meals.
If you forget to take a dose of Onus Oral Suspension, take it as soon as you remember. But, if it is time for your next dose, skip the missed dose and take your regular dose. Do not take a double dose to make up for a forgotten dose.
Onus Oral Suspension may cause changes in the vision, so one should avoid driving or operating any machine that requires mental alertness.
Suppose you took more than the recommended dose, as it might cause an overdose. Signs and symptoms of an overdose of Onus Oral Suspension may include constipation, dizziness or lightheadedness, fainting, irregular heartbeat, and sudden loss of vision for a short time. Seek immediate medical attention if you observe any symptoms or think you have taken too much. Do this even if there are no signs of discomfort or poisoning.
No, Onus Oral Suspension is not a steroid. Onus Oral Suspension belongs to a class of drugs known as anti-emetics.
While specific dosing instructions will vary depending on your individual needs and medical history. Always follow your doctor's prescribed dosage and timing for taking these medications.
Take Onus Oral Suspension exactly as prescribed by the doctor. Take it at the same time daily as it will help you to remember taking the medication.
Yes, Onus Oral Suspension has also been prescribed during pregnancy to help with symptoms of nausea and vomiting in pregnancy.

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